[TowerTalk] velocity factor for Saxton 8315 and 8316

[Dick Green WC1M]

Thanks, Jim. Could you summarize the procedure (e.g., measure the cable open
or shorted) and arithmetic for me?

73, Dick WC1M

> -----Original Message-----
> From: Jim Brown [mailto:jim at audiosystemsgroup.com]
> Sent: Friday, November 07, 2014 7:07 PM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] velocity factor for Saxton 8315 and 8316
> 
> On Fri,11/7/2014 2:30 PM, Dick Green WC1M wrote:
> > I think these cables are similar to LMR-240, but don't know if the
> > velocity factors would be the same.
> 
> Hi Dick,
> 
> Best way to learn it is to measure it. Find the null frequencies of a
known
> length of the cable as a stub, then do the arithmetic. Try to make the
> measurements at frequencies near where you want to use the cable,
> because Vf varies a bit with frequency. An analyzer as simple as an MFJ
> works for this.
> 
> 73, Jim K9YC